Which historical designation is listed as a synonym for *Operophtera brumata* (Linnaeus)?
*Cheimatobia brumaria*
The history of taxonomy shows that scientific naming conventions evolve as understanding improves, resulting in organisms being assigned to different genera before a current consensus is reached. For the Winter Moth, *Operophtera brumata*, several historical designations are recognized as synonyms. One specific example provided that illustrates this past ambiguity is *Cheimatobia brumaria*. Another historical synonym mentioned is *Phalaena. grisearia*. The acceptance of the current designation, *Operophtera brumata* as established by Linnaeus, is vital for reliable scientific communication globally, especially when tracking its introduction and spread across continents into areas like North America starting in the 1930s.
